13539093531 has 16 divisors (see below), whose sum is σ = 18392240160. Its totient is φ = 8857587200.

The previous prime is 13539093527. The next prime is 13539093559.

13539093531 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 13539093531 - 2² = 13539093527 is a prime.

It is a super-2 number, since 2×13539093531² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (13539093571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 163476 + ... + 231953.

It is an arithmetic number, because the mean of its divisors is an integer number (1149515010).

Almost surely, 2^13539093531 is an apocalyptic number.

13539093531 is a deficient number, since it is larger than the sum of its proper divisors (4853146629).

13539093531 is a wasteful number, since it uses less digits than its factorization.

13539093531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395646.

The product of its (nonzero) digits is 164025, while the sum is 42.

The spelling of 13539093531 in words is "thirteen billion, five hundred thirty-nine million, ninety-three thousand, five hundred thirty-one".